Buddhist Philosophy — by Daniel Cozort and Craig Preston
Losang Gonchok's Short Commentary to Jamyang Shayba's Root Text on Tenets.
Maps of the Profound - Jam-Yang-Shay-Ba's Great Exposition of Buddhist and Non-Buddhist Views on the Nature of Reality — by Jeffrey Hopkins
The most comprehensive and detailed exploration available of Tibetan tenet systems.
Overview of Buddhist Tantra - General Presentation of the Classes of Tantra, Captivating the Minds of the Fortunate Ones — by Panchen Sonam Dragpa
A scholarly exposition of the framework of Tantric practice, presented in a methodical and accessible manner.